Clicker Question #1!
What is the tension in the bar?!
!
100N
100N
A. The forces cancel by the principle of action and
reaction, so Tension=0N!
B. The forces contributions to pulling the rod apart
add up, so Tension=200N!
C. The force is pulling at

Center of Mass (COM, Cg)"
Key facts:
1. For near Earth gravity, gravitational forces on a
system are statically equivalent to a single force at
the center of mass
2. COM is objective
3. COM does not have to lie within the body
Key tip: clearly dene

Your Section #3 . . . . . . . Your Name: . [lg/Grade: . I I i . v /100
ENGRD 2020 — MECHANICS OF SOLIDS
Quiz Final Examination Friday, December 7, 2012
Academic integrity is expected of all students at all times whether in the presence
or absence of mem

If you want to know what a body is
experiencing at a particular location you can
take an internal cut at that location and find
the internal forces and moments.
This is useful for figuring out whether
something will break.

Clicker Question #1!
What is the tension in the bar?!
!
100N
100N
A. The forces cancel by the principle of action and
reaction, so Tension=0N!
B. The forces contributions to pulling the rod apart
add up, so Tension=200N!
C. The force is pulling at

ENGRD 2020 MECHANICS OF SOLIDS
Handout #1 for Homework
Due: Friday, September 16, 2011
1. Consider a rigid rod of length L supported by a pin joint at A and a spring at B . A force
P is applied to the rod and end C . The loading occurs under the following

ENGRD 2020 SPRING 2015
Homework #7 GROUP ASSIGNMENT
Due: 2/13
Complete the classroom activity and hand in as a group of 2-4. Detailed instructions
are below.
CRANE DESIGN ACTIVITY
As a group, design a 2D ver

Fluid Statics!
Fluids at rest exert normal force on
boundary surface
Assume zero shear
Neglect inertial terms
Often assume density is constant
Fluid Statics Terminology!
Pascals law pressure of a uid at a point is the
same in all directions
Pre